Air Products and Chemicals, Inc.

Other

Charles G Coe

Thomas R Gaffney

Steven M Kuznicki

John F Kirner

James Edward MacDougall

Johan Adriaan Martens

Ronald Pierantozzi

Pierre A Jacobs

David A Roberts

Hong-Xin Li

Thomas Albert Braymer

Thomas R White

Yanliang Xiong

Scott Jeffrey Weigel

Peter James Maroulis

Burton D Beitchman

Roger Dean Whitley

William Jack Casteel, Jr

Erin Marie Sorensen

Garret Chi-Ho Lau

Qiao Zhao

Melville W Uffner

Patrick J Clark

James Edward Mac Dougall

Donald E Jefferson

Christopher Robert Bongo

Geoffrey John Ochs

Marissa Ann Bonanno

Mark L Listemann

John N Armor

Philip Bruce Henderson

Brian Keith Peterson

Robert G Petrella

Thomas Stephen Farris

Daniel Joseph Tempel

Rajiv Krishan Agarwal

Keith Alan Ludwig

Alejandro L Cabrera

John Francis Lehmann

Rajagopalan S Srinivasan

Paul Anthony Webley

Stephen A Butter

Joan M Schork

Donald Elson Fowler

James W Brockington

Richard J Jenkins

Montford S Benson

Mildred A Miller

Ronald Joseph Kitzhoffer

Michael Francis Kimak

Arne Baumgartl

Yan Liang Xiong

An adsorbent having a composition comprising at least 90% chabazite where the chabazite is a single phase chabazite having an Si/Al ratio of 1.2 to 1.8, the chabazite includes a mixture of at least two types of cations, and each of the at least two types of cations are in a molar ratio relative to Al of at least 0.05.

Modified chabazite adsorbent compositions, methods of making and using them

A method of separating oxygen from an oxygen-containing fluid stream is disclosed, the method including the step of contacting the oxygen-containing fluid stream with an oxygen-selective zeolite adsorbent comprising at least 90% chabazite, wherein the chabazite is a single phase chabazite having an Si/Al ratio of 1.2 to 1.8. The single phase chabazite may comprise a mixture of at least two types of cations.

The method described herein provides a method for preparing a chlorinated silane at least one end product comprising SiHCl, SiHCl, and combinations thereof in molar yields of 50% or greater with respect to silane in the feed stream. The method described herein therefore provides an end product comprising the one or more chlorinated silanes by contacting reaction mixture comprising silane and hydrogen chloride with a catalyst at a temperature and time sufficient to provide the end product.

Method for making a chlorosilane

A method and apparatus for determining pore size distribution and/or the presence of at least one killer pore in at least a portion of a porous film deposited upon a substrate are disclosed herein. In one embodiment, there is provided a method for determining pore size distribution comprising: providing the substrate having the film deposited thereupon wherein the film comprises pores and wherein the pores have a first volume; exposing the film to an adsorbate at a temperature and a pressure sufficient to provide condensation of the adsorbate in pores and wherein the pores after the exposing step have a second volume; and measuring the difference between the first and the second volume using a volumetric technique; and calculating the pore size and pore volume using the change in the first and the second volume, the pressure, and a model that relates pressure to pore diameter.

Method for characterizing porous low dielectric constant films

A method of separating a more strongly adsorbable component from one or more less strongly adsorbable components residing in a gaseous mixture comprising contacting the gaseous mixture at elevated pressure with a composition and adsorbing the more strongly adsorbed gas specie on the composition, wherein the composition is represented by the formula

Zincoaluminosilicates of the FAU structure

A composition of matter represented by the formula

A faujasite aluminosilicate with a Si/Al ratio in the range of 1.05 to 1.26 having an non-uniform aluminum distribution, synthesized by crystallizing the zeolite from a mixture of alkali metal aluminate and alkali metal silicate wherein the mixture has an alkali metal oxide to silica ratio of at least 1.6 and a water to alkali metal oxide ratio of at least 37. The X-zeolite has utility as a gas separation adsorbent such as separating oxygen from nitrogen in air.

Faujasite adsorbents with nonuniform Al distribution

An improved adsorbent for ozone comprises a crystalline aluminosilicate in which at least 90% of the exchangeable cation content is in the acid form and further which contains between 0.5 and 20 wt % of one or more adsorbed components which are non-reactive with ozone. Preferably the adsorbed component is water, and the total non-framework metal content expressed as metal oxide is less than 0.4 mole %.

Adsorbents for ozone recovery from gas mixtures

The present invention is a method of selective adsorptively separating nitrogen from oxygen using a crystalline metallosilicate having a ZSM-2 structure with a Si/Al ratio less than 2.0 and a lithium cation exchange of at least 50%, wherein the composition has the chemical formula:

Gas separation with lithium-containing ZSM-2 metallosilicates

The present invention is a composition, a synthesis of the composition and a method of using the composition for selectively adsorptively separating nitrogen from oxygen wherein the composition is a crystalline EMT with a Si/Al ratio less than 2.0 and a micropore volume determined in the sodium and/or potassium form of at least 0.20 cm.sup.3 /g and a lithium cation exchange of at least 80%, preferably including an intergrowth with a crystalline FAU structure, wherein the pure or intergrowth compositions have the chemical formula:

High micropore volume low silica EMT-containing metallosilicates

The present invention is a composition, a synthesis of the composition and a method of using the composition for selectively adsorptively separating nitrogen from oxygen wherein the composition is a crystalline EMT with a Si/Al ratio less than 2.0 and a lithium cation exchange of at least 80%, preferably including an intergrowth with a crystalline FAU structure, wherein the pure or intergrowth compositions have the chemical formula:

Li-exchanged low silica EMT-containing metallosilicates

The present invention is directed to an at least binary exchanged X-zeolite having lithium and zinc cations in a ratio of preferably 5% to 40% zinc and 50% to 95% lithium, wherein the sum of the lithium and zinc ion exchange is at least 65% of the exchangeable ion content. Theses adsorbents are useful in a process for separating nitrogen from gas mixtures containing nitrogen and less strongly adsorbed components such as oxygen, hydrogen, argon or helium.

Zinc cation exchanged lithium X-zeolite for nitrogen adsorption

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Macungie, PA, United States of America

Charles G Coe